1880.] 409 



Stated Meeting, January 2, 1880. 



Present, 5 members. 



President, Mr. Fraley, in the Chair. 



A letter accepting his appointment to prepare an obituary 

 notice of the late M. Michel Chevalier, was received from 

 Mr. Moncure Robinson, dated Dec. 22, 1879. 



A letter of envoy was received from the London Meteor- 

 ological office, dated Dec. 1879. 



A letter requesting a copy of Proc. No. 100, to complete a 

 set was received from the Central Austalt fur Meteorologie, 

 dated Vienna, Dec. 4, 1879. 



A letter respecting exchanges of specimens was received 

 from Mr. H. B. Dawson, dated Morisania, N. Y., Dec. 5, 

 1879. 



Donations for the Library were received from the Prus- 

 sian Academy ; Revue Politique ; London Astronomical, 

 Geographical and Meteorological Societies, and the Cobden 

 Club ; the Royal Geological Society of Ireland ; the Massa- 

 chusetts Historical Society ; the Boston Society of Natural 

 History ; the American Chemical Society ; Mr. A. R. Grote ; 

 the Franklin Institute ; American Journal of Mathematics ; 

 the North American Entomologist ; the U. S. Treasury De- 

 partment ; the Botanical Gazette ; the Ministerio de Fo- 

 mento of Mexico, and Mr. S. H. Scudder. 



A communication on the Velocity of Light, by P. E. Chase 

 was read. 



A paper entitled " An account of an old work on Cosmog- 

 raphy, by Mr. Henry Phillips, Jr." was postponed to be 

 read at the next meeting. 



A paper on the relation of the crystalline rocks of South- 

 eastern Pennsylvania to the Silurian limestones, and on the 

 Hudson river age of the Hydromica schists (with map and 

 specimens), by Mr. Charles E. Hall, of the Geological Survey, 

 was postponed to be read at the next.meeting. 



PROC. AMER. PHILOS. SOC. XVIII. 105. 3A. PRINTED MARCH 30, 1880. 



